EP 0904253 B1 20010502 - METHOD FOR DESALINATING AND DEMINERALISING SOLUTIONS CONTAINING ACIDS AND/OR METAL SALTS
Title (en)
METHOD FOR DESALINATING AND DEMINERALISING SOLUTIONS CONTAINING ACIDS AND/OR METAL SALTS
Title (de)
VERFAHREN ZUR ENTSALZUNG, UND DEMINERALISIERUNG VON SÄURE UND/ODER METALLSALZEN ENTHALTENDEN LÖSUNGEN
Title (fr)
PROCEDE DE DESSALEMENT, DE DEMINERALISATION DE SOLUTIONS CONTENANT DES ACIDES ET/OU DES SELS METALLIQUES
Publication
Application
Priority
- FR 9601878 W 19961127
- FR 9514775 A 19951213
- FR 9604195 A 19960403
Abstract (en)
[origin: WO9721632A1] A method for desalinating, demineralising and optionally crystallising solutions containing acids and/or metal salts, comprising the steps of (a) conditioning pre-clarified solutions using a chemical reagent that inhibits salt precipitation, then optionally filtering the solutions; (b) concentrating the salts in a supersaturated brine that represents a 5-80 % fraction of the flow of solution to be treated; and (c) reducing and possibly neutralising the precipitation inhibiting effect in said brine, and precipitating out the crystallisable salts supersaturating the concentrated fraction.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
Designated contracting state (EPC)
BE CH DE ES FR GB IT LI NL PT
DOCDB simple family (publication)
WO 9721632 A1 19970619; CA 2235712 A1 19970619; CA 2235712 C 20060829; DE 69612674 D1 20010607; DE 69612674 T2 20010816; DE 904253 T1 19990819; EP 0904253 A1 19990331; EP 0904253 B1 20010502; ES 2128282 T1 19990516; ES 2128282 T3 20010616; FR 2742430 A1 19970620; FR 2742430 B1 19980904; PT 904253 E 20010830; US 6036867 A 20000314
DOCDB simple family (application)
FR 9601878 W 19961127; CA 2235712 A 19961127; DE 69612674 T 19961127; DE 96941068 T 19961127; EP 96941068 A 19961127; ES 96941068 T 19961127; FR 9604195 A 19960403; PT 96941068 T 19961127; US 4382898 A 19980615